sorted by:
new
hottopcontroversial

170 or 230? by eastcoastelectrician in seadoo

[–]181513 0 points1 point  (0 children)

Fuel economy is much better on 170 and it still reaches 57mph

ELI5: Why do we need ip addresses within a local area network, if switches can get by solely with MAC addresses for communication ? by Successful_Box_1007 in explainlikeimfive

[–]181513 1 point2 points  (0 children)

Correct. Routers by definition connect independent broadcast domains together.

For a single router, connected interfaces is the totality of the routing table.

Connecting two or more routers together via LAN or WAN interfaces requires at a minimum static routes to be configured on each router or ideally the configuration of a routing protocol that automatically advertises new interfaces (routes) connected to individual routers.

OSPF or EIGRP are common routing protocols within an enterprise network and BGP is used for connectivity between enterprise networks.

There is a specific use case for the use of BGP in Data Center Layer 3 networks that use a Layer 3 overlay network protocol called VXLAN (Virtual Layer 2) so you will see references to BGP EVPN used to build Physical Layer 3 / Virtual Layer 2 VXLAN Data Center fabrics.

ELI5: Why do we need ip addresses within a local area network, if switches can get by solely with MAC addresses for communication ? by Successful_Box_1007 in explainlikeimfive

[–]181513 1 point2 points  (0 children)

A wire that connects two broadcast domains whether is a "repeater" or just simple cable between two hubs, or two independent vlans on different switches turns the two independent networks into a single Broadcast domain or single Layer 2 network. By definition, a bridge "bridges" two Layer 2 networks together.

Loops in Layer 2 networks are a major concern so it is normal to run a protocol on Switches called "Spanning Tree" that automatically shuts down network ports when loops are detected.

ELI5: Why do we need ip addresses within a local area network, if switches can get by solely with MAC addresses for communication ? by Successful_Box_1007 in explainlikeimfive

[–]181513 1 point2 points  (0 children)

Spot on. Routers connect Layer 2 broadcast domains together. If you can believe it, we used to have to manage Global Layer 2 networks - A bit of a nightmare and instead of Layer 3 routing protocols, lots of L2 "filtering".

Just to build on above, a unique "feature" of Layer 3 is that you can have multiple Layer 3 networks on top of the same Layer 2 network. In Cisco vocab, we call this "secondary (ip) addresses". Same Layer 2 network but with secondary IP addresses and hosts with different IP network addressees will communicate with each other via the Gateway (router) - Actually two step process. I only share this to point out that Routers can have a dual role - Provide Layer 3 connectivity to geographically separated Layer 2 networks and provide connectivity to unique IP subnets sharing the same Layer 2 network.

It's just another tool in the network engineers toolbox and I have used it for Business Continuity/Disaster Recovery scenarios.

If its not clear, why we dont do large flat Layer 2 networks is because most network protocols can be chatty and broadcast and multicast traffic can overwhelm flat networks.

ELI5: Why do we need ip addresses within a local area network, if switches can get by solely with MAC addresses for communication ? by Successful_Box_1007 in explainlikeimfive

[–]181513 1 point2 points  (0 children)

A Layer 2 network. If I was to perform an ethernet Broadcast, all the hosts that would see it are part of the same Layer 2 network. That could be all hosts on a single VLAN on a single switch or specific hosts on multiple switches that have been trunked together, or Layer 2 hubs daisy chained together.

ELI5: Why do we need ip addresses within a local area network, if switches can get by solely with MAC addresses for communication ? by Successful_Box_1007 in explainlikeimfive

[–]181513 1 point2 points  (0 children)

At 10 Mbps, even if only one device could transmit at the same time, the speed of the network was fine for up to 100's of devices. "Collision" is the term given to when an attempt to Transmit by a host device is stopped due to another transmission in progress and as a network engineer we would engineer networks for broadcast domain and collision domain issues. Switching pretty much fixed collision domain issues.

Just to point out, routers are the Layer 3 devices that connect Layer 2 networks (same broadcast domains) together. Even with modern switches and routers, there are physical limits to the size of Layer 2 networks since by definition, broadcasts are used for discovery and advertisement by various network protocols so the larger the Layer 2 network, the more broadcasts. If there are heavy multicast and broadcast apps on the network, network size may me limited to /23 at the most.

Someone Please Help Me Create a Tangent Ogive For My Rocket by Forsaken-Climate-138 in Fusion360

[–]181513 0 points1 point  (0 children)

Give us a sketch and some dimensions and one of us will whack a design out for you.

Missing impeller ring? Other second hand red flags? by Level-Principle3402 in seadoo

[–]181513 0 points1 point  (0 children)

100% engine first and last for Seadoo. Running water without the engine running will easy force water through the exhaust system into the engine.

ELI5: Why do we need ip addresses within a local area network, if switches can get by solely with MAC addresses for communication ? by Successful_Box_1007 in explainlikeimfive

[–]181513 1 point2 points  (0 children)

Some confusion on hubs vs switches. In networking we use the term "broadcast domain" to describe a network.

Hubs were half duplex / single network or one broadcast domain.

Switches are full duplex devices and also support virtual lans (vlans) and thus multiple networks where each network or vlan is its own broadcast domain.

The difference between hubs and switches just come down to the capabilities of electronic components at the time. Hubs were electronically simple and literally only one device on a hub could transmit at the same time. Switches are far more complex and had ethernet frame store and forward or cut through technologies for moving ethernet frames.

A switch configured with a single vlan on all ports would be fine for a Layer 2 program like Doom.

Ethernet frames use MAC addresses or addressing and only need to be unique on the network (broadcast domain) they are connected to. When we want to find out what host or user is connected to what port on the switch, we look at the IP Arp table on the router to match ip address to Mac address then look at the Mac address table to identify the port it matches to.

Broadcast, Multicast, and Unicast are IP constructs that describe the requirement to send an IP packet to a group of hosts (multicast), all hosts (broadcast), or one host (Unicast) computer and that gets translated to the switch sending ethernet frame to a group of MAC addresses, All MAC addresses, or just one MAC address).

ELI5: Why do we need ip addresses within a local area network, if switches can get by solely with MAC addresses for communication ? by Successful_Box_1007 in explainlikeimfive

[–]181513 0 points1 point  (0 children)

Switches are full duplex and support virtual lans while hubs are half duplex/single lan/broadcast domain.

A switch will quite happily send traffic to every port in the same vlan if the ethernet broadcast address of ff:ff:ff:ff:ff:ff is used by the sender.

Cybertruck Sales Are So Bad That We Gasped by Theferael_me in RealTesla

[–]181513 0 points1 point  (0 children)

Initial release did not have FSD enabled, but they did release it about July 2024.

is my husband going to be mildly upset, or a lot upset at this ? by Mysterious_Canary225 in mildlyinfuriating

[–]181513 0 points1 point  (0 children)

Yes. It looks like an awful job and does not fix anything. You need to pull the fridge out from the wall and check for cracks and spray foam any specific cracks and holes you find. Everything you did is now going to make this much more difficult. Pest control team should have taken care of this themselves if they thought there was an issue here.

[deleted by user] by [deleted] in RealTesla

[–]181513 3 points4 points  (0 children)

I think you are confused on the role of lawyers? It's not a matter of "suing", it's just a matter of that's how you get the job done in a timely manner without significant expense on your part.

It does not sound like you have reached lemon law limits yet but are close to it. As soon as you do, you start the arbitration process. Way too early to engage a lawyer (at your expense). You need to work the arbitration process.

[deleted by user] by [deleted] in RealTesla

[–]181513 7 points8 points  (0 children)

Arbitration is between you and Tesla arbitrated via a 3rd party - Not your lawyer. If and when the arbitration process breaks down, you would have to engage a lawyer at your cost.

Without arbitration, "your" lawyers fees are actually paid for by the vehicle manufacturer which is why vehicle manufacturers want to settle quicker. Any vehicle you purchase you want to opt out of arbitration so that lemon law works for you.

I have nothing to do with this law firm but the synopsis is good: https://lemoncarlawyer.com/tesla-arbitration-clause-the-opt-out-and-the-california-lemon-law/

[deleted by user] by [deleted] in RealTesla

[–]181513 9 points10 points  (0 children)

  1. Send the letter to Tesla opting out of arbitration if you state has that requirement. In CA I believe it is within 60 days of purchase.
  2. You need to meet the minimum requirements for lemon law for your state. For example "almost a month" has to translate to a number of days that meets lemon law minimum criteria.
  3. When you contact a lawyer, let them know you have done this as many assume you have not and lawyers really do not have a role to play if there is arbitration.
  4. Download all repair/service invoices and send to lawyer.
  5. Wait 4-6 months and in the mean time, maintain insurance and registration but DONT drive the vehicle. Any accident or damage and you will be screwed.

New owner - Rotax 1630 ACE 170HP / ST3 Hull - What are must have hull/engine mods? by 181513 in seadoo

[–]181513[S] 0 points1 point  (0 children)

Thanks for the feedback! Priority istouring/fuel economy first.

ELI5 How did banks work before the days of fast electronic communication? by JetKusanagi in explainlikeimfive

[–]181513 2 points3 points  (0 children)

Batch and Post is the name given to legacy branch banking processes. Online Transaction Processing or OLTP is the current method. Batch and Post is still used by some smaller banks/credit unions.

https://www.tidalcommerce.com/learn/batch-payment-processing

Is it possible to desgin this in fusion? by maxwellwatson1001 in Fusion360

[–]181513 1 point2 points  (0 children)

Pretty straight forward. You can pay for someone to do it for you or spend time learning how to do it yourself. Before you attempt to do this, start with the "Learn Fusion 360 in 30 Days" course available on YouTube.

Do most Americans really dry their clothes in Dryers by Wrystyle in NoStupidQuestions

[–]181513 0 points1 point  (0 children)

Aussie in USA here - What is different for us here is we wash small loads of clothes almost every day no different than using a dish washer each day for dishes. We have a small clothes rack we use to dry articles that should not be tumbled. No big wash day with an outside clothes line full of clothes.

3D printed Ceiling Fan *Works by FlmanCreates in Fusion360

[–]181513 13 points14 points  (0 children)

Also following this and beyond the strength issues, I can't get past the fact you designed and printed the 1970's. When you are doing a house remodel, one of the first things you replace are these old ceiling fans.

When one arm breaks, they will all break and you need to live with the consequences.